Laboratory table



Oct. 2, 1928. 1,686,234

0. G. HARNE LABORATORY TABLE Filed Feb. 13, 1926 2 Sheets-Sheet 1 A TTORNEY INVENTOR BY W WW Fig. 2

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Oct. 2, 1928.

O. G. HARNE- LABORATORY TABLE Filed Feb. 13, 1926 2 Sheets-Sheet 2 INVENTOR ATTORNEY Patented Oct. 2, 1928.

UNITED STATES OLIVER G. HARNE, OF BALTIMORE, MARYLAND.

LABORATORY TABLE.

Application filed February The object of my invention is the providing of a laboratory table for use in laboratories where a plurality of tables might be desirable, but where lack of space and other conditions would make the same objection able. In my invention I have provided a number of surfaces and a number of tables in one structure, so that either surface or either table, or anumber of tables, may be used, as desired. I will explain the uses hereinafter.

A further object of my invention is the providing in a laboratory table means for inverting the same to get different operative surfaces on top.

A further object of my invention is the providing ina laboratory table a plurality of tables and means for placing any one on top, as desired.

A further object of my invention is the providing in a laboratory table, having a plurality of tables and a plurality of surfaces on each table, means for selectively elevating and placing uppermost the surfaces desired.

A further. object of my invention is an improved means for securing in a laboratory table various operative surfaces in desired positions.

With the foregoing and other objects in view, my invention consists of the novel construction, combinationand arrangement of parts as hereinafter specifically describedand illustrated in the accompanying drawings, where n 15 shown the preferred embodlment of my invention, but it is understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In laboratory practice, especially in teach ing or college work, it is customary to have a laboratory table for each particular type of work, necessitating several laboratories or the removal of the tablesprepared for the par ticular subjects discussed in the laboratories. In my improved system a single laboratory table may be equipped with the ordinary facilities, such as electricity, gas, air, etc. The subject under discussion may be prepared on one surface of my improved table and the various connections made, as desired, for the next subject that may follow by another instructor without disturbing the previoussetup; by a simple movement the first set-up 13, 1926. Serial No. 88.027.

may be changed to an under position and a new surface exposed for the following lecture, similar connections can be made and a new set-up can be had. This is especially adapted to the department of anatomy where often crowded conditions cause one class. operating on one set of cadavers, to remove the same so thatanother set may be brought in for the work of the following class. In my table, the first set can be easily and quickly lowered out of the way, bringing the second set on top.

Often different surfaces of tables are re quired, frequently at the same time. Iam able to bring two surfaces parallel and in alignment; one surface may be prepared for post mortemv work, with its necessary drains and protected edges, and the other surface may be used for instruments, fluids, or the general supplies required in the work, and may be positioned in alignment, as suggested, or above or below.

This table is particularly adapted to physiology, or pharmacology, where it is desired to have a living animal at one elevation and the source of fluids at a different elevation, higher or lower, as circumstances may requires This can be instantly changed and adjusted.

In the drawings of the. herein-described embodiment of my invention, Fig. 1 is an isometric View of my improved table showing one table directly over the other table; Fig. 2 is a side view in elevation of the position of the table shown in Fig. 1; Fig. 3 is an isometric view of my main table showing both tables or surfaces in horizontal alignment; Fig. 4: is a plan view of the table shown in the position shown in Fig. 1; Fig. 5 is a view of the guide supports removed from the surrounding mechanism; Fig. dis a view in section taken through 66 of Fig. 5; Fig. 7 is an enlarged view of the guide support locking means; Fig. 8 is a view in section taken through 8-8 of Fig. 7; and Fig. 9 is a view of the two tables removed from the supporting frame, one of them being inverted with reference to the other.

Similar numerals refer to similar parts throughout the several views.

A is the surface of one of thetables,

B being the reverse surface of the same table. C is the surface of another table, D being its reverse surface, the two tables respectively being designated as 5 and 6.

The ends of tables 5 and 6 are bound by channel irons 7, 8, 9 and 10, respectively.

11 and 12 are the bases provided with uprights 13 and 1st. i 15, 16, 17 and 18 are supporting standards made preferably integral with Sllll-Cll: cular guide supports 19, 20, 21 and 22, said I supporting standards being secured to bases 11 and 12, respectively, by means of knees 23, 24, 25 and 26, and the said guide supports are secured to uprights 13 and 1 1 by screws through backs 4-8. 7

On channel irons 7, 8, 9 and 10 are secured blocks 27, 28, 29 and 30, to which blocks are securedstraight parallel supporting arms 31, 32, 33 and 841-, and outside of which arms are secured off-set parallel supporting arms 35, 36, 37 and 38. 39 is a connecting link, as shown in Fig. 1, pivoted or fulerumed to parallel supporting arm 31 at one end and to 33 at its other end.

40 is a connecting link, as shown in Fig. 1, pivoted or fulcrumed to channel irons 7 and 9. From this point, in enumerating the parts, I will give only numbers to the parts at one end of the table, as both ends are alike.

41 is a connecting lever, as shown in Fig. 1, pivoted or ful'crumed to parallel supporting arms 31 and 33 at its ends and on the opposite sides thereof from the fulcruming of connecting link 39.

At the center of connecting lever l is secured trunnion 4-2, which trunnion is supported in upright 13 and thereby supports tables 5 and 6 and permits a rotation of the same. Lever 41 at one or both of its ends is slotted, as shown in Fig. 9 by numeral 1, in which its pivot or fulcrum may slide to permit of its proper operation.

Near the free ends of off set parallel supporting arms 35, 36, 37 and 38 are guide support locking means E, consisting of sliding block 43 through which operates clamping bolt 44, which bolt by means of head and washer 15 and operating nut 16 clamps the guide support- 19 and off-set parallel support ing arm 36 relatively fixed spaced apart by grooved washer 47.

Guide supports 19, 20, 21 and 22 are formed by concentric parallel semi-circular members provided with backs {18 set back from the edge of said members to permit the operation of the head and washer 4:5.

19 is a longitudinal brace, or spacer, for bases lland 12.

The ope 'ation of my invention is as follows:

Desired, to place surface C in the position of surface A. I

Take position as operator on the s'ide'opposite the guide support locking means E.

Release guide support locking means E, pull top table toward operator and press down. A will be seen to assume original position of C, and vice versa.

Given, surface C uppermost.

Desired, surface B uppermost. Restore the position A uppermost. Remove the guide support locking means E of table AB. Take position opposite the side on which the guide support locking means E were removed. Pull towardoperator, pressing downward until both tables are nearly in the same plane. Now, lift sliglitly on the outer edge of table A and surface B will appear from beneath A, while C will return to its original position. Fasten guide support locking means E.

Given, surface A or B uppermost.

Desired, surface D uppermost. Remove all guide support locking means E and by a simple gyration surface D will appear uppermost. Replace securing guide support locking means E.

Note: From this adjustment the other surfaces can be turned uppermost as described, as before the gyration.

Given, either surface A or C uppermost. l I,

Desired, step-like effect of tables AB and CD. Proceed as in paragraph 1, stopping tables in any position desired. Lock in said position with guide support locking means E73;

Note: Starting with A uppermost, A and C will become the surfaces exposed, and vice versa.

Given, table A uppermost.

Desired, surface B for use as a blackboard, or drawing table. Proceed as in paragraph 2.

Having thus described my invention, what I claim and desire to secure by Letters Patent is: y

1. In a laboratory table, a base, having at each end a support, a connecting link PlV". oted on the support to rotate in a vertical plane, a pair of supporting arms pivoted at each end of the connecting link, a table section rigidly attached to each supporting arm and spaced therefrom in the plane of the table, a connecting link pivoted to one table section near its edge and also pivoted to the other table section near its edge and a second link normally parallel to the last mentioned link and pivoted at one end near the end of positive meansfor mutually positioning said table sections to permit said tables to become relatively reversible.

3. In a sectional laboratory table two table sections, pivoted means connecting the sections together and other pivotal means connecting the sections pivotally to supports and positive means for mutually positionlng said table sections to permit said tables to become relatively reversible, consisting of off-set supporting arms secured at one end to said table sections, the other ends being guided in a definite path, and means for guiding said ends in said definite paths.

OLIVER G. HARNE. 

